Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1326 insertions, 0 deletions

diff --git a/canvas/source/tools/canvastools.cxx b/canvas/source/tools/canvastools.cxx
new file mode 100644
index 000000000..53ab7e71f
--- /dev/null
+++ b/canvas/source/tools/canvastools.cxx
@@ -0,0 +1,1326 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <limits>
+
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <basegfx/numeric/ftools.hxx>
+#include <basegfx/point/b2dpoint.hxx>
+#include <basegfx/point/b2ipoint.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/range/b2drange.hxx>
+#include <basegfx/range/b2drectangle.hxx>
+#include <basegfx/range/b2irange.hxx>
+#include <basegfx/utils/canvastools.hxx>
+#include <basegfx/vector/b2ivector.hxx>
+#include <com/sun/star/awt/Rectangle.hpp>
+#include <com/sun/star/awt/XWindow2.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/geometry/AffineMatrix2D.hpp>
+#include <com/sun/star/geometry/Matrix2D.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/rendering/ColorComponentTag.hpp>
+#include <com/sun/star/rendering/ColorSpaceType.hpp>
+#include <com/sun/star/rendering/CompositeOperation.hpp>
+#include <com/sun/star/rendering/IntegerBitmapLayout.hpp>
+#include <com/sun/star/rendering/RenderState.hpp>
+#include <com/sun/star/rendering/RenderingIntent.hpp>
+#include <com/sun/star/rendering/ViewState.hpp>
+#include <com/sun/star/rendering/XCanvas.hpp>
+#include <com/sun/star/rendering/XColorSpace.hpp>
+#include <com/sun/star/rendering/XIntegerBitmapColorSpace.hpp>
+#include <com/sun/star/util/Endianness.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <rtl/instance.hxx>
+#include <sal/log.hxx>
+#include <toolkit/helper/vclunohelper.hxx>
+#include <tools/diagnose_ex.h>
+#include <vcl/canvastools.hxx>
+#include <vcl/window.hxx>
+
+#include <canvas/canvastools.hxx>
+
+
+using namespace ::com::sun::star;
+
+namespace canvas::tools
+{
+        geometry::RealSize2D createInfiniteSize2D()
+        {
+            return geometry::RealSize2D(
+                std::numeric_limits<double>::infinity(),
+                std::numeric_limits<double>::infinity() );
+        }
+
+        rendering::RenderState& initRenderState( rendering::RenderState& renderState )
+        {
+            // setup identity transform
+            setIdentityAffineMatrix2D( renderState.AffineTransform );
+            renderState.Clip.clear();
+            renderState.DeviceColor = uno::Sequence< double >();
+            renderState.CompositeOperation = rendering::CompositeOperation::OVER;
+
+            return renderState;
+        }
+
+        rendering::ViewState& initViewState( rendering::ViewState& viewState )
+        {
+            // setup identity transform
+            setIdentityAffineMatrix2D( viewState.AffineTransform );
+            viewState.Clip.clear();
+
+            return viewState;
+        }
+
+        ::basegfx::B2DHomMatrix& getViewStateTransform( ::basegfx::B2DHomMatrix&    transform,
+                                                        const rendering::ViewState& viewState )
+        {
+            return ::basegfx::unotools::homMatrixFromAffineMatrix( transform, viewState.AffineTransform );
+        }
+
+        rendering::ViewState& setViewStateTransform( rendering::ViewState&          viewState,
+                                                     const ::basegfx::B2DHomMatrix& transform )
+        {
+            ::basegfx::unotools::affineMatrixFromHomMatrix( viewState.AffineTransform, transform );
+
+            return viewState;
+        }
+
+        ::basegfx::B2DHomMatrix& getRenderStateTransform( ::basegfx::B2DHomMatrix&      transform,
+                                                          const rendering::RenderState& renderState )
+        {
+            return ::basegfx::unotools::homMatrixFromAffineMatrix( transform, renderState.AffineTransform );
+        }
+
+        rendering::RenderState& setRenderStateTransform( rendering::RenderState&        renderState,
+                                                         const ::basegfx::B2DHomMatrix& transform )
+        {
+            ::basegfx::unotools::affineMatrixFromHomMatrix( renderState.AffineTransform, transform );
+
+            return renderState;
+        }
+
+        rendering::RenderState& appendToRenderState( rendering::RenderState&        renderState,
+                                                   const ::basegfx::B2DHomMatrix&   rTransform )
+        {
+            ::basegfx::B2DHomMatrix transform;
+
+            getRenderStateTransform( transform, renderState );
+            return setRenderStateTransform( renderState, transform * rTransform );
+        }
+
+        rendering::RenderState& prependToRenderState( rendering::RenderState&           renderState,
+                                                      const ::basegfx::B2DHomMatrix&    rTransform )
+        {
+            ::basegfx::B2DHomMatrix transform;
+
+            getRenderStateTransform( transform, renderState );
+            return setRenderStateTransform( renderState, rTransform * transform );
+        }
+
+        ::basegfx::B2DHomMatrix& mergeViewAndRenderTransform( ::basegfx::B2DHomMatrix&      combinedTransform,
+                                                              const rendering::ViewState&   viewState,
+                                                              const rendering::RenderState& renderState )
+        {
+            ::basegfx::B2DHomMatrix viewTransform;
+
+            ::basegfx::unotools::homMatrixFromAffineMatrix( combinedTransform, renderState.AffineTransform );
+            ::basegfx::unotools::homMatrixFromAffineMatrix( viewTransform, viewState.AffineTransform );
+
+            // this statement performs combinedTransform = viewTransform * combinedTransform
+            combinedTransform *= viewTransform;
+
+            return combinedTransform;
+        }
+
+        geometry::AffineMatrix2D& setIdentityAffineMatrix2D( geometry::AffineMatrix2D& matrix )
+        {
+            matrix.m00 = 1.0;
+            matrix.m01 = 0.0;
+            matrix.m02 = 0.0;
+            matrix.m10 = 0.0;
+            matrix.m11 = 1.0;
+            matrix.m12 = 0.0;
+
+            return matrix;
+        }
+
+        geometry::Matrix2D& setIdentityMatrix2D( geometry::Matrix2D& matrix )
+        {
+            matrix.m00 = 1.0;
+            matrix.m01 = 0.0;
+            matrix.m10 = 0.0;
+            matrix.m11 = 1.0;
+
+            return matrix;
+        }
+
+        namespace
+        {
+            class StandardColorSpace : public cppu::WeakImplHelper< css::rendering::XIntegerBitmapColorSpace >
+            {
+            private:
+                uno::Sequence< sal_Int8 >  maComponentTags;
+                uno::Sequence< sal_Int32 > maBitCounts;
+
+                virtual ::sal_Int8 SAL_CALL getType(  ) override
+                {
+                    return rendering::ColorSpaceType::RGB;
+                }
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL getComponentTags(  ) override
+                {
+                    return maComponentTags;
+                }
+                virtual ::sal_Int8 SAL_CALL getRenderingIntent(  ) override
+                {
+                    return rendering::RenderingIntent::PERCEPTUAL;
+                }
+                virtual uno::Sequence< beans::PropertyValue > SAL_CALL getProperties(  ) override
+                {
+                    return uno::Sequence< beans::PropertyValue >();
+                }
+                virtual uno::Sequence< double > SAL_CALL convertColorSpace( const uno::Sequence< double >& deviceColor,
+                                                                            const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override
+                {
+                    // TODO(P3): if we know anything about target
+                    // colorspace, this can be greatly sped up
+                    uno::Sequence<rendering::ARGBColor> aIntermediate(
+                        convertToARGB(deviceColor));
+                    return targetColorSpace->convertFromARGB(aIntermediate);
+                }
+                virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertToRGB( const uno::Sequence< double >& deviceColor ) override
+                {
+                    const double*  pIn( deviceColor.getConstArray() );
+                    const std::size_t nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::RGBColor > aRes(nLen/4);
+                    rendering::RGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::RGBColor(pIn[0],pIn[1],pIn[2]);
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToARGB( const uno::Sequence< double >& deviceColor ) override
+                {
+                    SAL_WARN_IF(!deviceColor.hasElements(), "canvas", "empty deviceColor argument");
+                    const double*  pIn( deviceColor.getConstArray() );
+                    const std::size_t nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::ARGBColor > aRes(nLen/4);
+                    rendering::ARGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::ARGBColor(pIn[3],pIn[0],pIn[1],pIn[2]);
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToPARGB( const uno::Sequence< double >& deviceColor ) override
+                {
+                    const double*  pIn( deviceColor.getConstArray() );
+                    const std::size_t nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::ARGBColor > aRes(nLen/4);
+                    rendering::ARGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::ARGBColor(pIn[3],pIn[3]*pIn[0],pIn[3]*pIn[1],pIn[3]*pIn[2]);
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< double > SAL_CALL convertFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override
+                {
+                    const rendering::RGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t             nLen( rgbColor.getLength() );
+
+                    uno::Sequence< double > aRes(nLen*4);
+                    double* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = pIn->Red;
+                        *pColors++ = pIn->Green;
+                        *pColors++ = pIn->Blue;
+                        *pColors++ = 1.0;
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< double > SAL_CALL convertFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override
+                {
+                    const rendering::ARGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t              nLen( rgbColor.getLength() );
+
+                    uno::Sequence< double > aRes(nLen*4);
+                    double* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = pIn->Red;
+                        *pColors++ = pIn->Green;
+                        *pColors++ = pIn->Blue;
+                        *pColors++ = pIn->Alpha;
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< double > SAL_CALL convertFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override
+                {
+                    const rendering::ARGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t              nLen( rgbColor.getLength() );
+
+                    uno::Sequence< double > aRes(nLen*4);
+                    double* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = pIn->Red/pIn->Alpha;
+                        *pColors++ = pIn->Green/pIn->Alpha;
+                        *pColors++ = pIn->Blue/pIn->Alpha;
+                        *pColors++ = pIn->Alpha;
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+
+                // XIntegerBitmapColorSpace
+                virtual ::sal_Int32 SAL_CALL getBitsPerPixel(  ) override
+                {
+                    return 32;
+                }
+                virtual uno::Sequence< ::sal_Int32 > SAL_CALL getComponentBitCounts(  ) override
+                {
+                    return maBitCounts;
+                }
+                virtual ::sal_Int8 SAL_CALL getEndianness(  ) override
+                {
+                    return util::Endianness::LITTLE;
+                }
+                virtual uno::Sequence<double> SAL_CALL convertFromIntegerColorSpace( const uno::Sequence< ::sal_Int8 >& deviceColor,
+                                                                                     const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override
+                {
+                    if( dynamic_cast<StandardColorSpace*>(targetColorSpace.get()) )
+                    {
+                        const sal_Int8* pIn( deviceColor.getConstArray() );
+                        const std::size_t  nLen( deviceColor.getLength() );
+                        ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                             "number of channels no multiple of 4",
+                                             static_cast<rendering::XColorSpace*>(this), 0);
+
+                        uno::Sequence<double> aRes(nLen);
+                        double* pOut( aRes.getArray() );
+                        for( std::size_t i=0; i<nLen; i+=4 )
+                        {
+                            *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
+                            *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
+                            *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
+                            *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
+                        }
+                        return aRes;
+                    }
+                    else
+                    {
+                        // TODO(P3): if we know anything about target
+                        // colorspace, this can be greatly sped up
+                        uno::Sequence<rendering::ARGBColor> aIntermediate(
+                            convertIntegerToARGB(deviceColor));
+                        return targetColorSpace->convertFromARGB(aIntermediate);
+                    }
+                }
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertToIntegerColorSpace( const uno::Sequence< ::sal_Int8 >& deviceColor,
+                                                                                         const uno::Reference< rendering::XIntegerBitmapColorSpace >& targetColorSpace ) override
+                {
+                    if( dynamic_cast<StandardColorSpace*>(targetColorSpace.get()) )
+                    {
+                        // it's us, so simply pass-through the data
+                        return deviceColor;
+                    }
+                    else
+                    {
+                        // TODO(P3): if we know anything about target
+                        // colorspace, this can be greatly sped up
+                        uno::Sequence<rendering::ARGBColor> aIntermediate(
+                            convertIntegerToARGB(deviceColor));
+                        return targetColorSpace->convertIntegerFromARGB(aIntermediate);
+                    }
+                }
+                virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertIntegerToRGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override
+                {
+                    const sal_Int8* pIn( deviceColor.getConstArray() );
+                    const std::size_t  nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::RGBColor > aRes(nLen/4);
+                    rendering::RGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::RGBColor(
+                            vcl::unotools::toDoubleColor(pIn[0]),
+                            vcl::unotools::toDoubleColor(pIn[1]),
+                            vcl::unotools::toDoubleColor(pIn[2]));
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertIntegerToARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override
+                {
+                    const sal_Int8* pIn( deviceColor.getConstArray() );
+                    const std::size_t  nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::ARGBColor > aRes(nLen/4);
+                    rendering::ARGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::ARGBColor(
+                            vcl::unotools::toDoubleColor(pIn[3]),
+                            vcl::unotools::toDoubleColor(pIn[0]),
+                            vcl::unotools::toDoubleColor(pIn[1]),
+                            vcl::unotools::toDoubleColor(pIn[2]));
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertIntegerToPARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override
+                {
+                    const sal_Int8* pIn( deviceColor.getConstArray() );
+                    const std::size_t  nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::ARGBColor > aRes(nLen/4);
+                    rendering::ARGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        const sal_Int8 nAlpha( pIn[3] );
+                        *pOut++ = rendering::ARGBColor(
+                            vcl::unotools::toDoubleColor(nAlpha),
+                            vcl::unotools::toDoubleColor(nAlpha*pIn[0]),
+                            vcl::unotools::toDoubleColor(nAlpha*pIn[1]),
+                            vcl::unotools::toDoubleColor(nAlpha*pIn[2]));
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override
+                {
+                    const rendering::RGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t             nLen( rgbColor.getLength() );
+
+                    uno::Sequence< sal_Int8 > aRes(nLen*4);
+                    sal_Int8* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Red);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Green);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Blue);
+                        *pColors++ = 0;
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override
+                {
+                    const rendering::ARGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t              nLen( rgbColor.getLength() );
+
+                    uno::Sequence< sal_Int8 > aRes(nLen*4);
+                    sal_Int8* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Red);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Green);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Blue);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Alpha);
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override
+                {
+                    const rendering::ARGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t              nLen( rgbColor.getLength() );
+
+                    uno::Sequence< sal_Int8 > aRes(nLen*4);
+                    sal_Int8* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Red/pIn->Alpha);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Green/pIn->Alpha);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Blue/pIn->Alpha);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Alpha);
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+
+            public:
+                StandardColorSpace() :
+                    maComponentTags(4),
+                    maBitCounts(4)
+                {
+                    sal_Int8*  pTags = maComponentTags.getArray();
+                    sal_Int32* pBitCounts = maBitCounts.getArray();
+                    pTags[0] = rendering::ColorComponentTag::RGB_RED;
+                    pTags[1] = rendering::ColorComponentTag::RGB_GREEN;
+                    pTags[2] = rendering::ColorComponentTag::RGB_BLUE;
+                    pTags[3] = rendering::ColorComponentTag::ALPHA;
+
+                    pBitCounts[0] =
+                    pBitCounts[1] =
+                    pBitCounts[2] =
+                    pBitCounts[3] = 8;
+                }
+            };
+
+            class StandardNoAlphaColorSpace : public cppu::WeakImplHelper< css::rendering::XIntegerBitmapColorSpace >
+            {
+            private:
+                uno::Sequence< sal_Int8 >  maComponentTags;
+                uno::Sequence< sal_Int32 > maBitCounts;
+
+                virtual ::sal_Int8 SAL_CALL getType(  ) override
+                {
+                    return rendering::ColorSpaceType::RGB;
+                }
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL getComponentTags(  ) override
+                {
+                    return maComponentTags;
+                }
+                virtual ::sal_Int8 SAL_CALL getRenderingIntent(  ) override
+                {
+                    return rendering::RenderingIntent::PERCEPTUAL;
+                }
+                virtual uno::Sequence< beans::PropertyValue > SAL_CALL getProperties(  ) override
+                {
+                    return uno::Sequence< beans::PropertyValue >();
+                }
+                virtual uno::Sequence< double > SAL_CALL convertColorSpace( const uno::Sequence< double >& deviceColor,
+                                                                            const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override
+                {
+                    // TODO(P3): if we know anything about target
+                    // colorspace, this can be greatly sped up
+                    uno::Sequence<rendering::ARGBColor> aIntermediate(
+                        convertToARGB(deviceColor));
+                    return targetColorSpace->convertFromARGB(aIntermediate);
+                }
+                virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertToRGB( const uno::Sequence< double >& deviceColor ) override
+                {
+                    const double*  pIn( deviceColor.getConstArray() );
+                    const std::size_t nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::RGBColor > aRes(nLen/4);
+                    rendering::RGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::RGBColor(pIn[0],pIn[1],pIn[2]);
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToARGB( const uno::Sequence< double >& deviceColor ) override
+                {
+                    const double*  pIn( deviceColor.getConstArray() );
+                    const std::size_t nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::ARGBColor > aRes(nLen/4);
+                    rendering::ARGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::ARGBColor(1.0,pIn[0],pIn[1],pIn[2]);
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToPARGB( const uno::Sequence< double >& deviceColor ) override
+                {
+                    const double*  pIn( deviceColor.getConstArray() );
+                    const std::size_t nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::ARGBColor > aRes(nLen/4);
+                    rendering::ARGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::ARGBColor(1.0,pIn[0],pIn[1],pIn[2]);
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< double > SAL_CALL convertFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override
+                {
+                    const rendering::RGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t             nLen( rgbColor.getLength() );
+
+                    uno::Sequence< double > aRes(nLen*4);
+                    double* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = pIn->Red;
+                        *pColors++ = pIn->Green;
+                        *pColors++ = pIn->Blue;
+                        *pColors++ = 1.0; // the value does not matter
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< double > SAL_CALL convertFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override
+                {
+                    const rendering::ARGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t              nLen( rgbColor.getLength() );
+
+                    uno::Sequence< double > aRes(nLen*4);
+                    double* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = pIn->Red;
+                        *pColors++ = pIn->Green;
+                        *pColors++ = pIn->Blue;
+                        *pColors++ = 1.0; // the value does not matter
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+                virtual uno::Sequence< double > SAL_CALL convertFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override
+                {
+                    const rendering::ARGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t              nLen( rgbColor.getLength() );
+
+                    uno::Sequence< double > aRes(nLen*4);
+                    double* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = pIn->Red/pIn->Alpha;
+                        *pColors++ = pIn->Green/pIn->Alpha;
+                        *pColors++ = pIn->Blue/pIn->Alpha;
+                        *pColors++ = 1.0; // the value does not matter
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+
+                // XIntegerBitmapColorSpace
+                virtual ::sal_Int32 SAL_CALL getBitsPerPixel(  ) override
+                {
+                    return 32;
+                }
+                virtual uno::Sequence< ::sal_Int32 > SAL_CALL getComponentBitCounts(  ) override
+                {
+                    return maBitCounts;
+                }
+                virtual ::sal_Int8 SAL_CALL getEndianness(  ) override
+                {
+                    return util::Endianness::LITTLE;
+                }
+                virtual uno::Sequence<double> SAL_CALL convertFromIntegerColorSpace( const uno::Sequence< ::sal_Int8 >& deviceColor,
+                                                                                     const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override
+                {
+                    if( dynamic_cast<StandardNoAlphaColorSpace*>(targetColorSpace.get()) )
+                    {
+                        const sal_Int8* pIn( deviceColor.getConstArray() );
+                        const std::size_t  nLen( deviceColor.getLength() );
+                        ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                             "number of channels no multiple of 4",
+                                             static_cast<rendering::XColorSpace*>(this), 0);
+
+                        uno::Sequence<double> aRes(nLen);
+                        double* pOut( aRes.getArray() );
+                        for( std::size_t i=0; i<nLen; i+=4 )
+                        {
+                            *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
+                            *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
+                            *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
+                            *pOut++ = 1.0; pIn++;
+                        }
+                        return aRes;
+                    }
+                    else
+                    {
+                        // TODO(P3): if we know anything about target
+                        // colorspace, this can be greatly sped up
+                        uno::Sequence<rendering::ARGBColor> aIntermediate(
+                            convertIntegerToARGB(deviceColor));
+                        return targetColorSpace->convertFromARGB(aIntermediate);
+                    }
+                }
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertToIntegerColorSpace( const uno::Sequence< ::sal_Int8 >& deviceColor,
+                                                                                         const uno::Reference< rendering::XIntegerBitmapColorSpace >& targetColorSpace ) override
+                {
+                    if( dynamic_cast<StandardNoAlphaColorSpace*>(targetColorSpace.get()) )
+                    {
+                        // it's us, so simply pass-through the data
+                        return deviceColor;
+                    }
+                    else
+                    {
+                        // TODO(P3): if we know anything about target
+                        // colorspace, this can be greatly sped up
+                        uno::Sequence<rendering::ARGBColor> aIntermediate(
+                            convertIntegerToARGB(deviceColor));
+                        return targetColorSpace->convertIntegerFromARGB(aIntermediate);
+                    }
+                }
+                virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertIntegerToRGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override
+                {
+                    const sal_Int8* pIn( deviceColor.getConstArray() );
+                    const std::size_t  nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::RGBColor > aRes(nLen/4);
+                    rendering::RGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::RGBColor(
+                            vcl::unotools::toDoubleColor(pIn[0]),
+                            vcl::unotools::toDoubleColor(pIn[1]),
+                            vcl::unotools::toDoubleColor(pIn[2]));
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertIntegerToARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override
+                {
+                    const sal_Int8* pIn( deviceColor.getConstArray() );
+                    const std::size_t  nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::ARGBColor > aRes(nLen/4);
+                    rendering::ARGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::ARGBColor(
+                            1.0,
+                            vcl::unotools::toDoubleColor(pIn[0]),
+                            vcl::unotools::toDoubleColor(pIn[1]),
+                            vcl::unotools::toDoubleColor(pIn[2]));
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertIntegerToPARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override
+                {
+                    const sal_Int8* pIn( deviceColor.getConstArray() );
+                    const std::size_t  nLen( deviceColor.getLength() );
+                    ENSURE_ARG_OR_THROW2(nLen%4==0,
+                                         "number of channels no multiple of 4",
+                                         static_cast<rendering::XColorSpace*>(this), 0);
+
+                    uno::Sequence< rendering::ARGBColor > aRes(nLen/4);
+                    rendering::ARGBColor* pOut( aRes.getArray() );
+                    for( std::size_t i=0; i<nLen; i+=4 )
+                    {
+                        *pOut++ = rendering::ARGBColor(
+                            1.0,
+                            vcl::unotools::toDoubleColor(pIn[0]),
+                            vcl::unotools::toDoubleColor(pIn[1]),
+                            vcl::unotools::toDoubleColor(pIn[2]));
+                        pIn += 4;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override
+                {
+                    const rendering::RGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t             nLen( rgbColor.getLength() );
+
+                    uno::Sequence< sal_Int8 > aRes(nLen*4);
+                    sal_Int8* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Red);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Green);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Blue);
+                        *pColors++ = 1.0;
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override
+                {
+                    const rendering::ARGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t              nLen( rgbColor.getLength() );
+
+                    uno::Sequence< sal_Int8 > aRes(nLen*4);
+                    sal_Int8* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Red);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Green);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Blue);
+                        *pColors++ = -1;
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+
+                virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override
+                {
+                    const rendering::ARGBColor* pIn( rgbColor.getConstArray() );
+                    const std::size_t              nLen( rgbColor.getLength() );
+
+                    uno::Sequence< sal_Int8 > aRes(nLen*4);
+                    sal_Int8* pColors=aRes.getArray();
+                    for( std::size_t i=0; i<nLen; ++i )
+                    {
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Red/pIn->Alpha);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Green/pIn->Alpha);
+                        *pColors++ = vcl::unotools::toByteColor(pIn->Blue/pIn->Alpha);
+                        *pColors++ = -1;
+                        ++pIn;
+                    }
+                    return aRes;
+                }
+
+            public:
+                StandardNoAlphaColorSpace() :
+                    maComponentTags(3),
+                    maBitCounts(3)
+                {
+                    sal_Int8*  pTags = maComponentTags.getArray();
+                    sal_Int32* pBitCounts = maBitCounts.getArray();
+                    pTags[0] = rendering::ColorComponentTag::RGB_RED;
+                    pTags[1] = rendering::ColorComponentTag::RGB_GREEN;
+                    pTags[2] = rendering::ColorComponentTag::RGB_BLUE;
+
+                    pBitCounts[0] =
+                    pBitCounts[1] =
+                    pBitCounts[2] = 8;
+                }
+            };
+
+            struct StandardColorSpaceHolder : public rtl::StaticWithInit<uno::Reference<rendering::XIntegerBitmapColorSpace>,
+                                                                         StandardColorSpaceHolder>
+            {
+                uno::Reference<rendering::XIntegerBitmapColorSpace> operator()()
+                {
+                    return new StandardColorSpace();
+                }
+            };
+
+            struct StandardNoAlphaColorSpaceHolder : public rtl::StaticWithInit<uno::Reference<rendering::XIntegerBitmapColorSpace>,
+                                                                         StandardNoAlphaColorSpaceHolder>
+            {
+                uno::Reference<rendering::XIntegerBitmapColorSpace> operator()()
+                {
+                    return new StandardNoAlphaColorSpace();
+                }
+            };
+        }
+
+        uno::Reference<rendering::XIntegerBitmapColorSpace> const & getStdColorSpace()
+        {
+            return StandardColorSpaceHolder::get();
+        }
+
+        uno::Reference<rendering::XIntegerBitmapColorSpace> const & getStdColorSpaceWithoutAlpha()
+        {
+            return StandardNoAlphaColorSpaceHolder::get();
+        }
+
+        rendering::IntegerBitmapLayout getStdMemoryLayout( const geometry::IntegerSize2D& rBmpSize )
+        {
+            rendering::IntegerBitmapLayout aLayout;
+
+            aLayout.ScanLines = rBmpSize.Height;
+            aLayout.ScanLineBytes = rBmpSize.Width*4;
+            aLayout.ScanLineStride = aLayout.ScanLineBytes;
+            aLayout.PlaneStride = 0;
+            aLayout.ColorSpace = getStdColorSpace();
+            aLayout.Palette.clear();
+            aLayout.IsMsbFirst = false;
+
+            return aLayout;
+        }
+
+        uno::Sequence<sal_Int8> colorToStdIntSequence( const ::Color& rColor )
+        {
+            uno::Sequence<sal_Int8> aRet(4);
+            sal_Int8* pCols( aRet.getArray() );
+#ifdef OSL_BIGENDIAN
+            pCols[0] = rColor.GetRed();
+            pCols[1] = rColor.GetGreen();
+            pCols[2] = rColor.GetBlue();
+            pCols[3] = 255-rColor.GetTransparency();
+#else
+            *reinterpret_cast<sal_Int32*>(pCols) = sal_Int32(rColor);
+#endif
+            return aRet;
+        }
+
+        // Create a corrected view transformation out of the give one,
+        // which ensures that the rectangle given by (0,0) and
+        // rSpriteSize is mapped with its left,top corner to (0,0)
+        // again. This is required to properly render sprite
+        // animations to buffer bitmaps.
+        ::basegfx::B2DHomMatrix& calcRectToOriginTransform( ::basegfx::B2DHomMatrix&            o_transform,
+                                                            const ::basegfx::B2DRange&          i_srcRect,
+                                                            const ::basegfx::B2DHomMatrix&      i_transformation )
+        {
+            if( i_srcRect.isEmpty() )
+            {
+                o_transform = i_transformation;
+                return o_transform;
+            }
+
+            // transform by given transformation
+            ::basegfx::B2DRectangle aTransformedRect;
+
+            calcTransformedRectBounds( aTransformedRect,
+                                       i_srcRect,
+                                       i_transformation );
+
+            // now move resulting left,top point of bounds to (0,0)
+            const basegfx::B2DHomMatrix aCorrectedTransform(basegfx::utils::createTranslateB2DHomMatrix(
+                -aTransformedRect.getMinX(), -aTransformedRect.getMinY()));
+
+            // prepend to original transformation
+            o_transform = aCorrectedTransform * i_transformation;
+
+            return o_transform;
+        }
+
+        ::basegfx::B2DRange& calcTransformedRectBounds( ::basegfx::B2DRange&            outRect,
+                                                        const ::basegfx::B2DRange&      inRect,
+                                                        const ::basegfx::B2DHomMatrix&  transformation )
+        {
+            outRect.reset();
+
+            if( inRect.isEmpty() )
+                return outRect;
+
+            // transform all four extremal points of the rectangle,
+            // take bounding rect of those.
+
+            // transform left-top point
+            outRect.expand( transformation * inRect.getMinimum() );
+
+            // transform bottom-right point
+            outRect.expand( transformation * inRect.getMaximum() );
+
+            ::basegfx::B2DPoint aPoint;
+
+            // transform top-right point
+            aPoint.setX( inRect.getMaxX() );
+            aPoint.setY( inRect.getMinY() );
+
+            aPoint *= transformation;
+            outRect.expand( aPoint );
+
+            // transform bottom-left point
+            aPoint.setX( inRect.getMinX() );
+            aPoint.setY( inRect.getMaxY() );
+
+            aPoint *= transformation;
+            outRect.expand( aPoint );
+
+            // over and out.
+            return outRect;
+        }
+
+        bool isInside( const ::basegfx::B2DRange&       rContainedRect,
+                       const ::basegfx::B2DRange&       rTransformRect,
+                       const ::basegfx::B2DHomMatrix&   rTransformation )
+        {
+            if( rContainedRect.isEmpty() || rTransformRect.isEmpty() )
+                return false;
+
+            ::basegfx::B2DPolygon aPoly(
+                ::basegfx::utils::createPolygonFromRect( rTransformRect ) );
+            aPoly.transform( rTransformation );
+
+            return ::basegfx::utils::isInside( aPoly,
+                                               ::basegfx::utils::createPolygonFromRect(
+                                                   rContainedRect ),
+                                               true );
+        }
+
+        namespace
+        {
+            bool clipAreaImpl( ::basegfx::B2IRange*       o_pDestArea,
+                               ::basegfx::B2IRange&       io_rSourceArea,
+                               ::basegfx::B2IPoint&       io_rDestPoint,
+                               const ::basegfx::B2IRange& rSourceBounds,
+                               const ::basegfx::B2IRange& rDestBounds )
+            {
+                const ::basegfx::B2IPoint aSourceTopLeft(
+                    io_rSourceArea.getMinimum() );
+
+                ::basegfx::B2IRange aLocalSourceArea( io_rSourceArea );
+
+                // clip source area (which must be inside rSourceBounds)
+                aLocalSourceArea.intersect( rSourceBounds );
+
+                if( aLocalSourceArea.isEmpty() )
+                    return false;
+
+                // calc relative new source area points (relative to orig
+                // source area)
+                const ::basegfx::B2IVector aUpperLeftOffset(
+                    aLocalSourceArea.getMinimum()-aSourceTopLeft );
+                const ::basegfx::B2IVector aLowerRightOffset(
+                    aLocalSourceArea.getMaximum()-aSourceTopLeft );
+
+                ::basegfx::B2IRange aLocalDestArea( io_rDestPoint + aUpperLeftOffset,
+                                                    io_rDestPoint + aLowerRightOffset );
+
+                // clip dest area (which must be inside rDestBounds)
+                aLocalDestArea.intersect( rDestBounds );
+
+                if( aLocalDestArea.isEmpty() )
+                    return false;
+
+                // calc relative new dest area points (relative to orig
+                // source area)
+                const ::basegfx::B2IVector aDestUpperLeftOffset(
+                    aLocalDestArea.getMinimum()-io_rDestPoint );
+                const ::basegfx::B2IVector aDestLowerRightOffset(
+                    aLocalDestArea.getMaximum()-io_rDestPoint );
+
+                io_rSourceArea = ::basegfx::B2IRange( aSourceTopLeft + aDestUpperLeftOffset,
+                                                      aSourceTopLeft + aDestLowerRightOffset );
+                io_rDestPoint  = aLocalDestArea.getMinimum();
+
+                if( o_pDestArea )
+                    *o_pDestArea = aLocalDestArea;
+
+                return true;
+            }
+        }
+
+        bool clipScrollArea( ::basegfx::B2IRange&                  io_rSourceArea,
+                             ::basegfx::B2IPoint&                  io_rDestPoint,
+                             std::vector< ::basegfx::B2IRange >& o_ClippedAreas,
+                             const ::basegfx::B2IRange&            rBounds )
+        {
+            ::basegfx::B2IRange aResultingDestArea;
+
+            // compute full destination area (to determine uninitialized
+            // areas below)
+            const ::basegfx::B2I64Tuple& rRange( io_rSourceArea.getRange() );
+            ::basegfx::B2IRange aInputDestArea( io_rDestPoint.getX(),
+                                                io_rDestPoint.getY(),
+                                                (io_rDestPoint.getX()
+                                                 + static_cast<sal_Int32>(rRange.getX())),
+                                                (io_rDestPoint.getY()
+                                                 + static_cast<sal_Int32>(rRange.getY())) );
+            // limit to output area (no point updating outside of it)
+            aInputDestArea.intersect( rBounds );
+
+            // clip to rBounds
+            if( !clipAreaImpl( &aResultingDestArea,
+                               io_rSourceArea,
+                               io_rDestPoint,
+                               rBounds,
+                               rBounds ) )
+                return false;
+
+            // finally, compute all areas clipped off the total
+            // destination area.
+            ::basegfx::computeSetDifference( o_ClippedAreas,
+                                             aInputDestArea,
+                                             aResultingDestArea );
+
+            return true;
+        }
+
+        ::basegfx::B2IRange spritePixelAreaFromB2DRange( const ::basegfx::B2DRange& rRange )
+        {
+            if( rRange.isEmpty() )
+                return ::basegfx::B2IRange();
+
+            const ::basegfx::B2IPoint aTopLeft( ::basegfx::fround( rRange.getMinX() ),
+                                                ::basegfx::fround( rRange.getMinY() ) );
+            return ::basegfx::B2IRange( aTopLeft,
+                                        aTopLeft + ::basegfx::B2IPoint(
+                                            ::basegfx::fround( rRange.getWidth() ),
+                                            ::basegfx::fround( rRange.getHeight() ) ) );
+        }
+
+        uno::Sequence< uno::Any >& getDeviceInfo( const uno::Reference< rendering::XCanvas >& i_rxCanvas,
+                                                  uno::Sequence< uno::Any >&                  o_rxParams )
+        {
+            o_rxParams.realloc( 0 );
+
+            if( i_rxCanvas.is() )
+            {
+                try
+                {
+                    uno::Reference< rendering::XGraphicDevice > xDevice( i_rxCanvas->getDevice(),
+                                                                         uno::UNO_SET_THROW );
+
+                    uno::Reference< lang::XServiceInfo >  xServiceInfo( xDevice,
+                                                                        uno::UNO_QUERY_THROW );
+                    uno::Reference< beans::XPropertySet > xPropSet( xDevice,
+                                                                    uno::UNO_QUERY_THROW );
+
+                    o_rxParams.realloc( 2 );
+
+                    o_rxParams[ 0 ] <<= xServiceInfo->getImplementationName();
+                    o_rxParams[ 1 ] = xPropSet->getPropertyValue( "DeviceHandle" );
+                }
+                catch( const uno::Exception& )
+                {
+                    // ignore, but return empty sequence
+                }
+            }
+
+            return o_rxParams;
+        }
+
+        awt::Rectangle getAbsoluteWindowRect( const awt::Rectangle&                  rRect,
+                                              const uno::Reference< awt::XWindow2 >& xWin  )
+        {
+            awt::Rectangle aRetVal( rRect );
+
+            VclPtr<vcl::Window> pWindow = VCLUnoHelper::GetWindow(xWin);
+            if( pWindow )
+            {
+                ::Point aPoint( aRetVal.X,
+                                aRetVal.Y );
+
+                aPoint = pWindow->OutputToScreenPixel( aPoint );
+
+                aRetVal.X = aPoint.X();
+                aRetVal.Y = aPoint.Y();
+            }
+
+            return aRetVal;
+        }
+
+        ::basegfx::B2DPolyPolygon getBoundMarksPolyPolygon( const ::basegfx::B2DRange& rRange )
+        {
+            ::basegfx::B2DPolyPolygon aPolyPoly;
+            ::basegfx::B2DPolygon     aPoly;
+
+            const double nX0( rRange.getMinX() );
+            const double nY0( rRange.getMinY() );
+            const double nX1( rRange.getMaxX() );
+            const double nY1( rRange.getMaxY() );
+
+            aPoly.append( ::basegfx::B2DPoint( nX0+4,
+                                               nY0 ) );
+            aPoly.append( ::basegfx::B2DPoint( nX0,
+                                               nY0 ) );
+            aPoly.append( ::basegfx::B2DPoint( nX0,
+                                               nY0+4 ) );
+            aPolyPoly.append( aPoly ); aPoly.clear();
+
+            aPoly.append( ::basegfx::B2DPoint( nX1-4,
+                                               nY0 ) );
+            aPoly.append( ::basegfx::B2DPoint( nX1,
+                                               nY0 ) );
+            aPoly.append( ::basegfx::B2DPoint( nX1,
+                                               nY0+4 ) );
+            aPolyPoly.append( aPoly ); aPoly.clear();
+
+            aPoly.append( ::basegfx::B2DPoint( nX0+4,
+                                               nY1 ) );
+            aPoly.append( ::basegfx::B2DPoint( nX0,
+                                               nY1 ) );
+            aPoly.append( ::basegfx::B2DPoint( nX0,
+                                               nY1-4 ) );
+            aPolyPoly.append( aPoly ); aPoly.clear();
+
+            aPoly.append( ::basegfx::B2DPoint( nX1-4,
+                                               nY1 ) );
+            aPoly.append( ::basegfx::B2DPoint( nX1,
+                                               nY1 ) );
+            aPoly.append( ::basegfx::B2DPoint( nX1,
+                                               nY1-4 ) );
+            aPolyPoly.append( aPoly );
+
+            return aPolyPoly;
+        }
+
+        int calcGradientStepCount( ::basegfx::B2DHomMatrix&      rTotalTransform,
+                                   const rendering::ViewState&   viewState,
+                                   const rendering::RenderState& renderState,
+                                   const rendering::Texture&     texture,
+                                   int                           nColorSteps )
+        {
+            // calculate overall texture transformation (directly from
+            // texture to device space).
+            ::basegfx::B2DHomMatrix aMatrix;
+
+            rTotalTransform.identity();
+            ::basegfx::unotools::homMatrixFromAffineMatrix( rTotalTransform,
+                                                            texture.AffineTransform );
+            ::canvas::tools::mergeViewAndRenderTransform(aMatrix,
+                                                         viewState,
+                                                         renderState);
+            rTotalTransform *= aMatrix; // prepend total view/render transformation
+
+            // determine size of gradient in device coordinate system
+            // (to e.g. determine sensible number of gradient steps)
+            ::basegfx::B2DPoint aLeftTop( 0.0, 0.0 );
+            ::basegfx::B2DPoint aLeftBottom( 0.0, 1.0 );
+            ::basegfx::B2DPoint aRightTop( 1.0, 0.0 );
+            ::basegfx::B2DPoint aRightBottom( 1.0, 1.0 );
+
+            aLeftTop    *= rTotalTransform;
+            aLeftBottom *= rTotalTransform;
+            aRightTop   *= rTotalTransform;
+            aRightBottom*= rTotalTransform;
+
+            // longest line in gradient bound rect
+            const int nGradientSize(
+                static_cast<int>(
+                    std::max(
+                        ::basegfx::B2DVector(aRightBottom-aLeftTop).getLength(),
+                        ::basegfx::B2DVector(aRightTop-aLeftBottom).getLength() ) + 1.0 ) );
+
+            // typical number for pixel of the same color (strip size)
+            const int nStripSize( nGradientSize < 50 ? 2 : 4 );
+
+            // use at least three steps, and at utmost the number of color
+            // steps
+            return std::max( 3,
+                               std::min(
+                                   nGradientSize / nStripSize,
+                                   nColorSteps ) );
+        }
+
+        void clipOutDev(const rendering::ViewState& viewState,
+                        const rendering::RenderState& renderState,
+                        OutputDevice& rOutDev,
+                        OutputDevice* p2ndOutDev)
+        {
+            // accumulate non-empty clips into one region
+            vcl::Region aClipRegion(true);
+
+            if( viewState.Clip.is() )
+            {
+                ::basegfx::B2DPolyPolygon aClipPoly(
+                    ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(viewState.Clip) );
+
+                if( aClipPoly.count() )
+                {
+                    // setup non-empty clipping
+                    ::basegfx::B2DHomMatrix aMatrix;
+                    aClipPoly.transform(
+                        ::basegfx::unotools::homMatrixFromAffineMatrix( aMatrix,
+                                                                        viewState.AffineTransform ) );
+
+                    aClipRegion = vcl::Region::GetRegionFromPolyPolygon( ::tools::PolyPolygon( aClipPoly ) );
+                }
+                else
+                {
+                    // clip polygon is empty
+                    aClipRegion.SetEmpty();
+                }
+            }
+
+            if( renderState.Clip.is() )
+            {
+                ::basegfx::B2DPolyPolygon aClipPoly(
+                    ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(renderState.Clip) );
+
+                ::basegfx::B2DHomMatrix aMatrix;
+                aClipPoly.transform(
+                    ::canvas::tools::mergeViewAndRenderTransform( aMatrix,
+                                                                  viewState,
+                                                                  renderState ) );
+
+                if( aClipPoly.count() )
+                {
+                    // setup non-empty clipping
+                    vcl::Region aRegion = vcl::Region::GetRegionFromPolyPolygon( ::tools::PolyPolygon( aClipPoly ) );
+                    aClipRegion.Intersect( aRegion );
+                }
+                else
+                {
+                    // clip polygon is empty
+                    aClipRegion.SetEmpty();
+                }
+            }
+
+            // setup accumulated clip region. Note that setting an
+            // empty clip region denotes "clip everything" on the
+            // OutputDevice (which is why we translate that into
+            // SetClipRegion() here). When both view and render clip
+            // are empty, aClipRegion remains default-constructed,
+            // i.e. empty, too.
+            if( aClipRegion.IsNull() )
+            {
+                rOutDev.SetClipRegion();
+
+                if( p2ndOutDev )
+                    p2ndOutDev->SetClipRegion();
+            }
+            else
+            {
+                rOutDev.SetClipRegion( aClipRegion );
+
+                if( p2ndOutDev )
+                    p2ndOutDev->SetClipRegion( aClipRegion );
+            }
+        }
+
+        void extractExtraFontProperties(const uno::Sequence<beans::PropertyValue>& rExtraFontProperties,
+                        sal_uInt32 &rEmphasisMark)
+        {
+            for(const beans::PropertyValue& rPropVal : rExtraFontProperties)
+            {
+                if (rPropVal.Name == "EmphasisMark")
+                    rPropVal.Value >>= rEmphasisMark;
+            }
+        }
+
+} // namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */